Window-sash burglar-alarm



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Patented Apr.' 23, 1895.

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x mum a vIO UNITED STATES PATENT EEICE.

JACOB SOHONEBERGER, OF BROOKLYN, NEW YORK.

Wl NDOW-SASH BU RG LARWALARMl SPECIFICATION forming' part of Letters Patent NO. 538,128, dated April 23, 1895.

Application led October 2,"1 894.

To all whom it may concern:

Be it known that' I, JACOB SCHONEBERGER, a citizen of `the United States, residing at Brooklyn, in the county of Kings and State ot' New York, have invented new and useful Im-v provements in a Combined Window-Fastening and Burglar-Alarm, of which the following is a specification. This invention relates to burglar alarms.

The Objectis to produce a device of simple and inexpensive construction, and that may also bythe addition of a pawl be used as a combined window fastening and alarm by which a window may be secured in a closed position and a signal sounded upon its being opened. 1

With this object in view, the invention comprises a toothed wheel Vrotatably Vmounted upon the lower sash of a window and engag` ing a rack bar upon the upper sash, and a bell supported adjacent the wheel, the clapper thereof 'being actuated by projections upon the wheel.

The inventionnis illustrated in the accompanyin g drawings, forming a part of this specification, in which like letters of reference indicate corresponding parts in both views.

Figure lis a view in front elevation of one embodiment of the invention with the front plate of the casing removed. Fig. 2 is a View Serial No. 524,770. (No model.)

disk a7, which, upon rotation of the wheel, engages and trips a spring clapper a8 causing it to strike the gong and sound an alarm. Be- 4 5 rack upon raising or lowering the sash the signal will sound.

The advantages of this invention lie in its extreme simplicity of construction, low cost of manufacture, effectiveness in operation and the convenience and readiness with which it 6o may be applied.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An alarm comprising a toothed wheel rotatably mounted upon the lower sash of a window and engaging a rack bar upon the upper sash, abellsupported adjacent the wheel, the clapper thereof being actuated by projections upon the wheel, as speciiied.

2. An alarm comprising a toothed wheel rotatably mounted upon the lower sash of a window and engaging a rack bar upon the upper sash, a bell supported adjacent the wheel,

the clapper thereof being spring held and adapted to be actuated by projections upon the wheel, substantially as described.

In testimony whereof I have hereunto affixed my signature in the presence of two subscribing witnesses.

JACOB SCHONEBERGER.

Witnesses:

JAS. REYNOLDS, CHAs. KROECK, Jr. 

